Give two examples of the following change occurring during a chemical reaction: Formation of precipitate Enable Ginger Cannot connect to Ginger Check your internet connection or reload the browser Disable in this text field Rephrase Rephrase current sentence Edit in Ginger ×

Ionic compounds dissociate in a chemical reaction to produce cations and anions. These cations, or anions, begin bonding with other ions in the solution, forming an insoluble product known as a precipitate. Two examples in this category are- i) When barium chloride reacts with sodium sulphate, a white precipitate of barium sulphate is formed. Na 2 SO 4 + BaCl 2 → 2 NaCl + BaSO 4 ↓ ii) When potassium chloride reacts with silver nitrate, a precipitate of silver chloride is formed. AgNO 3 ( aq ) + KCl ( aq ) → AgCl ( s ) ↓ + KNO 3 ( aq )

E M B I B E

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 8

HARD

8th ICSE

IMPORTANT

Earn 100

Give two examples of the following change occurring during a chemical reaction :
Change of state of the reactants.

Important Questions on Physical and Chemical Changes

HARD

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 8

Give two examples of the following change occurring during a chemical reaction:
Change of colour.

HARD

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 8

Give two examples of the following change occurring during a chemical reaction.
Evolution of a gas

HARD

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 8

Give two examples of the following change occurring during a chemical reaction:
Formation of precipitate

MEDIUM

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 9

Classify the following changes as a physical or a chemical change:

Burning of a magnesium ribbon, dissolving sugar in water, burning sugar, melting of butter, breaking of a glass bottle, clothes being ironed, wool being knitted into a sweater, souring of milk, and drying of wet hair.

MEDIUM

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 1

State whether the following statement is true or false. If false, rewrite the correct form of statement.
Melting of ice is a periodic change.

MEDIUM

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 2

State whether the following statement is true or false. If false, rewrite the correct form of statement.
A matchstick burns to produce smoke and some gases. It is an example of a physical change.

MEDIUM

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 3

State whether the following statement are true or false. If false, rewrite the correct form of statement.
Making of an aeroplane out of a paper is an example of irreversible change.

MEDIUM

8th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Physical and Chemical Changes>TEST Yourself>Q 4

State whether the following statement is true or false. If false, rewrite the correct form of statement.
A chemical change can be usually reversed.